Before confirming the PCBA sample, you may need to submit the following documents:
1. Circuit board design files: including Gerber files, layout diagrams, schematics, etc.
2. BOM List: Provides detailed information about PCBA components, including part numbers, manufacturers, quantities, etc.
3. Welding documents: including welding process specifications, welding point layout, etc.
4. Program files: If it involves the development of embedded software or firmware, you may need to provide source code, compilation files, etc.
5. Test plan and report: including test plan, test process, test results, etc.
In addition, you can provide any other information that helps understand the requirements and specifications of PCBA samples, such as special functional requirements, performance indicators, etc. The specific information requirements may vary depending on the project, and it is recommended to communicate with PCBA manufacturers or suppliers according to the actual situation to ensure consistency in the information required for sample confirmation among all parties.

How long does it take to purchase a PCB board and the production cycle from PCB board to PCBA board
If it is a double-sided board, it usually takes 5-7 days, which is enough for a batch of about 12 days
4-6 layer board sampling 10-15 days, batch 25-30 days
8-layer board sampling takes 20-25 days, batch production takes 35-40 days
If it's a patch, it should be done quickly
In terms of PCB cycle, it mainly depends on the number of layers on your board and the difficulty of the process
PCBA is usually based on the PCB cycle plus a few days, which should be about the same
Because PCB is crucial and the components required for PCBA are fixed, you can purchase them in advance
Of course, there are also special circumstances.